Nokya Mercedes S420 Cosmic Headlight bulbs are one of the best kept secrets in the industry. Though they are widely distributed throughout the industry, and their quality rivals that of the German and Japanese lighting giants, they do almost no marketing, instead pouring every dollar into the development and optimization of their Head Light Bulb line. The result is the unsung hero of automotive lighting and favorite of automotive enthusiasts in the know; Nokya Pro-Halogens. This pair of Aftermarket Mercedes S420 Head Lamp bulbs is from Nokya's Cosmic White series. This coating is a modern reinvention of their Arctic White color which made them famous. By using a mirror type finish along with a light ion coating to clean up the light, these Mercedes S420 Low Beam Headlamp Replacement Bulbs produce a very clean white light that from certain angles shows tints of brilliant violet and red. Nokya Cosmic White is recommended for users who want a new and different look for their S420's lighting while still looking clean and elegant. These Mercedes S420 Cosmic White Replacement Low Beam Headlight Bulbs are also high wattage for increased brightness and visibility, thus Nokya Heavy Duty harnesses are recommended as a precautionary measure.

General:
Please make sure your lights have been off for at least 5-10 minutes before attempting to install. The glass gets extremely hot and could take some time to cool down.

Make sure your S420 is off and parked on a level surface. For added safety, you could disconnect your positive battery terminal to make sure you do not damage your electrical system. This is also a good idea for newer model cars that throw a check engine light when you replace your headlight bulbs.

If any dirt or oil (including skin oil) gets on the glass of the bulb it could cause the bulb to overheat and blow prematurely. For this reason, please make sure to wear clean gloves and avoid touching the glass.

Is the price listed for a single S420 bulb or is it for the pair?

All the NOKYA bulbs we sell for your S420 are sold by the pair. By paying the listed price, you get both bulbs. We do not have the bulbs packaged for individual sale.

How long will these NOKYA bulbs last in my Mercedes S420?

Generally speaking, if the bulbs are installed properly without leaving any dirt or oil on the surface, you could expect them to last 1-2 years. If you have any blowouts within the first couple of months, please let us know and we will be happy to replace them for you.

Do you carry BLUE headlight or fog light bulbs for my Mercedes S420?

There are only a few companies that produce truly BLUE light bulbs (not super white with a blue tint, but actually royal blue). We do not carry these types of bulbs as the coating is usually very dark resulting in a very dim beam, making them a safety hazard.

Will these bulbs burn the wire harnesses on my Mercedes S420?

Your S420's stock wire harness is not designed to withstand continuous extended usage. For that reason, we offer Nokya Replacement Harnesses to ensure long term proper lighting on your S420. They are also a far cheaper alternative to buying S420 factory harnesses which lack the heat capacity of the Nokya S420 harnesses.

No. Contrary to popular belief, aftermarket bulbs add color to your high beams / low beams / fog lights by adding a tint to the glass. This tint results in a nicer beam, but blocks out a small amount of light, resulting in a slightly dimmer beam than your stock clear S420 bulb would have. The color comes at the price of a LITTLE bit of brightness, but most people do not notice the difference.

First off, the stock bulbs on your S420 are going to wear out eventually. Replacing your bulbs with aftermarket headlight bulbs (or fog light bulbs) and keeping your OEM headlight bulbs for spares can be a good way to make sure you are always driving safe and minimize your chances of getting a time wasting fix-it ticket.
Also, changing your headlight bulbs can be an inexpensive, quick, and easy way to give your S420 a nice personalized touch that unlike many upgrades, you can actually SEE while driving.

Features

High Wattage for increased brightness and visibility

Extra thick glass for increased bulb life

Set comes with 2 bulbs

Fitment

The Headlight Bulbs offered on this page are designed to specifically fit a Mercedes S420 produced during the following model years:
1997 or 97. Please also note any specific model notes on the product title at the top of the page.

While it may fit other vehicles, Please try the vehicle search on the center of our main page. or email us if you have any questions.

NOKYA® Headlight Bulbs
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